Hosted by the U.S. House of Representatives’ Science and National Labs Caucus, the Expo was held June 10 in the Rayburn House Office Building where the group led participants in hands-on science demonstrations of the capabilities found at Berkeley Lab’s user facilities. These included high-resolution computed tomography to gain a better understanding of a grapevine’s water transport system (ALS), sourcing novel enzymes from fungi to expedite biomass breakdown for biofuels (JGI in collaboration with the Environmental Molecular Sciences Laboratory at PNNL), exploring protein folding and unfolding with precision physical models of polypeptides (The Molecular Foundry), harnessing supercomputing to improve lithium-ion batteries (NERSC), and electron tomography for three-dimensional analysis of nano-structures (NCEM). The National User Facility (NUFO) represents the interests of all users who conduct research at U.S. national scientific user facilities, as well as scientists from U.S. universities, laboratories, and industry who use similar facilities outside the United States. Its primary mission is to facilitate communication among users, user organizations, facility administrators, and other stakeholders on topics of importance to the facilities. NUFO is comprised of 48 facilities (six from Berkeley Lab), of which more than 40 were represented at the Capitol Hill event.